Froogle:
Developed by Google, Inc. One of the most promising price comparison sites to date.
BizRate:
One of the largest price search sites. Over 30 million products listed.
Shopping.com:
Child of Dealtime and Epinions, now merged to provide you with three shopping search engines that feature your products separately, yet the same.
Yahoo Shopping:
Complete Yahoo Shopping data feed creation and maintenance solutions.
MSN Shopping:
Complete MSN Shopping data feed creation and maintenance solutions.
NexTag Shopping:
Complete NexTag data feed creation and maintenance solutions.
PriceGrabber Shopping:
Complete PriceGrabber data feed creation and maintenance solutions.
Iain Grahame Rare Books
Specialist in rare natural history books, shooting books, stalking books, hunting books, fishing books, bird books and africana books and prints.
Inlibris
Fine and rare books; specializes in autographs, manuscripts, and archives of significant personalities of science and the arts.
I.C.Books
Used and rare books, sorted by category.
The Ink Company
Rare and out of print books, sorted by specialty and searchable.
Ian Barfield Books.
Out of print and second hand academic books; philosophy a speciality.